摘要：We review several methods of disclosure control seemingly useful for disclosure control at the level of national institutes of statistics. All of them have some advantages as well as inherent disadvantages. There are strong doubts about the existence of a promising all-round technique. Therefore a preferable way out of this dilemma between public needs and collateral damages of disclosure control seems to be an in-house control of users analysing public data instead of applying weak confi dentiality techniques.
